An interesting note about the sulphur smell associated with Sasquatch. That smell is also known to be present around other mysterious beings. Beings such as El Chupicapra, Mothman, the Jersey Devil, Spring Heeled Jack and even some ghost sightings are known to emit a sulphurus smell. Is there a connection? Or is it just one big strange coincidence?
I don't believe these creatures have any connection with any of other things you mentioned. They are not paranormal IMHO.
I am allowing this one post on the subject, but please don't post anything about the various paranormal bigfoot theories on this message forum. There are other forums that allow such, but I don't.